I'm not a backend developer but I can give some tips from my humble experience in programming.

1- Enroll in Udemy courses (it's my favorite, also it shows the HR that you're ready to spend money to educate yourself)

2- Don't get frustrated: I used to get frustrated by the speed of the instructor and how easy coding seems to him/her, while I'm struggling to write 1 simple line of code.

3- Practice, Practice, Practice....: to handle tip #2, you need to Practice as much as you can. Before you go to sleep, as yourself this question: "Did I get the most out of me today?" If the answer is yes, then you can go to sleep, if not, then turn on your PC and code.

Yes that's correct!
One small trick also that could keep you motivated. At the end of each week, repeat the very first video you've watched at the beginning of the week, and that includes coding. If you think it's less complex even by 1%, then you're doing a great progress.